Warp stop-motion for looms.



ATE NTED AUG. 13, 190?.

W. F. ANDREWS. WARP STOPMOTION FOR LOOMS.

APPLIOATION FILED JULY 30 1906.

2 SHEETS-SHEET l.

PATENTED AUG. 13. 1907.

No; 863,131. W. F. 'ANDREWS.

WARP STOP MOTION FOR Looms.-

APPLIOATION FILED JULY 30, 1906.

z snnms-snnm 2.

flV/////// //Wlll I I!!! A UNITED STATES PATENT OFFICE. WILLIAM F.ANDREWS, OF GREENWOOD, SOUTH CAROLINA, ASSIGNOR TO DRAPER COMPANY,

OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

STOP-FICTION FOR LOOMS.

N o. 863,131. i Specification of Letters Patent. Patented Aug. 13, 1907.

' Application filed July 30,1906. Serial No. 328,293.

To all whom it may concern: r ient form of warp-stop-motion for purposesof illustra- Beit known that I, WILLIAM F. ANDREWS, a citizen tionandexplanation, and have applied thereto one of the United States, residingin Greenwood, county of practical embodimentof my invention without inany Greenwood, and State of South Carolina, have invented wayrestricting my invention thereto. '5 an Improvement in Warp Stop-Motionsfor Looms, of The various novel features of my invention will be I whichthe following description, in connection with the fully described in thesubjoined specification and paraccompanying drawing, is a specification,like letters ticularly pointed out in the following claims.

on the drawing representing like parts. Figure l is a partial transversesectional view of a In operating a loom provided with a warpstop-mosufficient portion of a loom provided with a warp-stoption,designed to effect stoppage of the loom automatmotion, with onepractical embodiment of my present 'ically .upon the occurrence of awarp fault, (such as invention applied thereto, the parts being shownwith failure or undue slackness of a warp-thread) a great the loom inoperation; Fig. 2. is a detail of a portion of deal of trouble and delayis occasioned in actual practhe stop-motion shown in Fig. 1, but afterthe same tice by loom stoppages due to' slacki threads, which are. hasoperated to cause loom stoppage, and the loom has frequently verydifficult to find. Often the slackness been started, the loom-stoppingfunction of the stopis only temporary, t. e,, of such extent that if theloom motion being held in abeyance; Fig. 3 is a top plan couldb'e run ashort time the slackness would be-gradview, enlarged, of one form ofmeans for rendering theually taken up, or the continued operation of theloom warp-stop-rnotion ineffective to cause loom stoppage. would givethe attendant ample time to find the faulty The lay l, cam shaft 2,shipper 3, and'the notched 1U ;hread and correct the fault if necessary.Heretofore, holding plate 4 for the shipper, may be and are of well Ihowever, when loom stoppage has been effected by or known construction,the shipper when released acting through the warp stop-motion' it hasnot been possible to throw off the power from the loom through any suit-,to resume the operation of the loom until the faulty ableinstrumentality, such for instance as shifting a thread has been foundand the fault corrected,- for othdriving belt from a fast to a loosepulley, and so familiar d erwise the stop-motion would act at once tostop the to those skilled in the art as to require neither descriploomeach time it Wasstarted. Such stoppages when tion nor illustration. dueto slack threads unnecessarily waste the time, of -I have for purposesof illustration only shown herein, the weaver'and decrease theproduction of the loom, ,in Fig. 1, a warp-stop-rnotion wherein thestop-motion because, as has been stated, thefault would generallycontrolling detectors also serve as heddles, of the socorrect itself ifonly the 100111 could continue in o eracalled "steel-harness t e, eachof the harness-frames P YP tion. forming partof the shed-formingmechanism including My present irivention has'for its object theproduction an upper cross-bar a which serves as a support for and ofmeans whereby, by and at the will of the operator, a from which thedetector-heddles d are suspended. warp-stop-motion maybe renderedineffective to cause Such detector-heddles are made in practice as loomstoppage. If, therefore-the loom'is stopped by longthin and flat metalstrips longitudinally slotted or through the warp-stop motion the weavercan, by at d near their upper ends to receive the supports 1 myinvcntion', immediately thereafter start the loom the slots being longenough 10; permit relative longituand continu weaving and at leisurediscover and cor dinal movement of a heddle when under certain conrectthe fault if it is not cured by the operation of the ditions released byfailure r undue slackness of its 40 10am itself. warp-thread. Thethreads pass through warp-eyes d iffy invention is also of greatadvantage when putting in the heddles, as shown. Two opposit ly movingfeelr. now warp into a loom," because the warp-stop-Inotion ers f,carried by rock-shaftsf Figs. 1 and 2, are norcan.- be renderedineffective to stop the loom while the mally vibrated toward and. fromeach other below the .enision of the warp is being properly adjusted for'lower ends of the detecto'-heddles, which are divided 4- '5 weaving. I7 into two groups by an upright plate a Segmental in- Sofar as I amaware it is broadly new to render a termeshing gears P on therock-shafts are herein shown warp stop 'motion ineffective to stop theloom while; causing them to rock oppositely in proper timing-a othelrf'functions of such stop-motion remain active, and 1 spring 8X sifectingthe inward or feeling stroke f the accordingly my invention is notrestricted to any pain I feelers." The outward stroke thereof isolliictod positicula'r type of warp-stop-motion, nor to the particulartively by or through suitable n1:.-rlr:r;:i.-;:u indicated at meansherein described and illustrated for accomplish- M, Figs. '1 and 2,operated by rmulion of the caming such result. I have therefore chosenone convenshaft 2.

So far as concerns the mechanism thus far described l stop-motion andthe shipper knock-off member. llere it is well known in the art and notof my invention. and needs no further description other than to statethat when a detector-huddle is released by failure or undue slackness ofits warp-thread the lower end of such heddle will engage and arrest itsfeelcr on the feeling stroke when the harness-frame in which such heddleis located is down. Thcreupon the mechanism indicated at M effectslongitudinal inovementof a 5 from the? position shown inFig. l, to thatshown in Fig. 2. such'movement operating to effect the actuation of aninstrumentality to stop the loom.

The lower end of the link 5 is pivots-.lly connected at 6, see also Fig.3, to an arm 7 the hub S whereof loosely vembraces a rock-shaft 9mounted in bearings 10 on a cross-girth 1i at the front of the loomnearthe base thereof. The hub S herein.constitutes a coupling and isshown in Fig. 3 as having a notch 12 in one face to receive a lug 13 ona collar 14 fast on the rock-shaftil. a spring l5 normally tending toretain the hub and collar in engagement locked together, forming acoupling or clutch to connect the shaft and arm 7 to rock together..This is, however, only a convenient and practical form of coupling orconnection between the arm and shirt, and my invention is not restrictedthereto, as any other convenient and suitable lo m of coupling may beused. It is generally customary to locate the "link 5 at or near thecenter of the loom, and accordingly the shaft of the loom, a knock-offarm or member 16 9 is extended toward the shipper side being made V fastto the rock-shaft and having-a cam-slotted upper end 17 through whichthe lower end of the. shipper 3 passes, as shown in Figs. 1 and 2.

From the foregoingdescription it will be seen that a connection isprovided between the shipper-releasing device or knock-off member andthe warp-stop-motion, such connection including a coupling device, andunder or dinary circumstances the longitudinal n1ovemen t of the link 5from the position shown in Fig. 1 to that shown in Fig. 2 will swing thearm 7 and rockrthe shaft 9, moving the knock-off member 16 2oeffectrelease of the shipper and consequent stoppage of the loom. As will bereadily understood the longitudinal movement of the link is effectedwhen the warp-thread'of a dctector-heddle fails or becomesunduly slack.Now if the loom be started. the coupling referred to being operative andthe warp fault continuagain, for the detector ing, the stop-motion willimmediately stop the loom which had cooperated with the fecler willagain cooperate therewith.

It has been statedthat many operations of a warpstop motion are due toslack threads, which are usually very difficult for the. weaverltopromptly locate, and it vhas also been pointed out that frequently the'slackness would be Woven up could 'the loom be started and itsoperation continued, or the weaver would be afforded ample time tolocate the slack thread without loss of productionby the loom. Thishighly desirable object I attain by rendering the coupling inoperativefor any desired length of time, the loom-stopping function of thcvarpstop-motion'being held in abcyance so long as the coupling isinoperative. In other words Irender the stopping mechanism of thestop-motion ineffective at the will of the weaver by disconnecting thelink in 1 accomplish such object by pivoting a. handle 18 on theerossgirth at'lil, and connect ing it with the hub S by a pin 20 looselyentering aslot 21 in the handle.

when the handle is swung to the left, Fig. 3, the coupling is renderedinoperative, the notched coupling hub 8 being drawn away from the lug l3and against the spring 15, disconnecting the arm 7 and the rockshaft 9.Any suitable catch may be used to hold the handle when the coupling isinoperative. and herein a locking pin 22 passed loosely through thehandle is adapted to drop-into a hole or socket 23 in the crossgirth 11,(see dotted lines Fig. 2.) Supposing the loom to have been stopped bythe warp-stop-motion, by reason of a. warp fault. if i'he'weaver doesnot at once discover whether the fault is a broken warp-thread or aslack thread he moves the handle 18 to render the coupling inoperative,the locking pin 22 dropping-into its socket 223. The shipper isthcnmoved to running position and thelooln is started. and while thereleased detector will cooperate again with its feelcr as shown at 1P",Fig. 2, the stop-motion is rendered ineffective to cause loom stoppage.Thus the weaving continues. and if the original cause of stoppage was aslack thread its slackness will be woven up orthe weaver is givensutiicient-tinw to find it and then correct the fault if necessary. Afailed warp-thread is much more readily located than a'slack thread; buteven ifthe initial stoppage was due to a failed thread the continuedoperation of the loom will not be objec tionable, as the fault will belocated before any dainage is done to the cloth. As soon IStli8 weaverdiv covers the thread at fault lie-either stops the loom to correct it,or if that is not necessary unlocks the coupling-controlling handle andthe spring 15 rcstorcs the coupling to operative condition. Thewarp-stop-motion is thereby given control of the stoppinginstrumentality, and normal conditions are restored. The coupling isconvenient to the weaver, and can be readily manipulated by him withoutleaving the front of the loom. v i 4 Having fully described myinvention, What I claim as new and desire to secure by Letters Patentis 1. In a loom, a shipper, mechanism adapted to effect release thereofupon failure or undue slackness of a warp thread. and means operative atwill torender said mechanism ineffective with relation only to theshipper.

2!. In a loom, a shipper, a knock-off member to release it, mechanism tonormally actuate said member upon lime or undue slackness of awarp-thread and thereby release the shipper, and means actuated by theoperator to prevent actuation of the knock-off member by or through saidmechanism while the loom continues to run.

In a loom, mechanism adapted to effect the actuation of n stoppinginstrnmentalitv upon failure or undne sla ckness of a warp-thread, andmeans operative at will to hold such actuation of the stoppinginstrumentality in abevahcc while the loom continues to run,

4. A loom having, in combination, mechanism to effect its stoppage uponthe occurrence of a warp fault, and means operative at will to preventthe only the unshipping of the loom.

5. A loom having. in combination. a shipper. mechanism adapted to effectrelease thereof upon the occurrence of :1 \vurp fault, and meansgoverned wholly by the operator to render said mechanism inactive withrespect to the shipperonly for any desired interval of time.

6. In a loom, mechanism to normally effect :1 change in the operationthereof upon the occurrence of :i warp fault. and manually :totnatodmeans to at, will rondor said llltt'lItlIllSlll inotl'ootiro only tochang'o tho oporation of tho loonL T; In a loom. a shlppor, \rarpslop'motion (-ontrolli delortors. a Ieelor adapted Jo onga io a dotootorrolo:

ott by failure or undue slaoknoss ot' a \rarp-throzulv morhanismnormally rondorod oporativo lay uoh oooporation of tho t't olcr and adetector to Causo roloasool' tho shippor. and means :u-tuatod hy theoporator to rondor said morhaniam inetl rtiro to roloase tho shippor. 4

R. In a loom. a shippor, moohanisin adaptod to normally .offoet' roloasethoroof, upon t'ailnro or unduo slavkuoss of a warp stopanotionmechanism adapted to oporat'o tho ai't'uator upon faihiro or unduoslaoknoss of a \varp-tlu'oad. and means operativev at will to disconnecttho knoolvoh' member and its actuator. wherohy the loom ran ho runnotwithstanding a continuance of tho warp fault.

10. The combination, in a loom, of a shipper. mothanism; including-aooupling to effort: roloasu ot' the shipper upon lure mundue slackncr ofa \varp-tln-oad. and means to at will release the coupling and thorohyrondor they said incohanism'inofiective with rcspfict to tho shipperwhile the coupling is roleused.

11. The combination, in a loom. of nieohanisiu to operato in apredetcrminod maunoiupon tailuro or unduo slacknoss of a warp-thread,and adaptad to thoroupou eti'eot th actuation of a stoppinginstrumontality for th loom. and moans operated at will to prevent.actuation of the stopping instrmnontality whilo pormiltin: saidllltt'ilfll'liSIIt ito oporate in such prodotorminotl mannor.

12. In a loom. med-forming mechanism invluding a serif of stop-motioncontrolling (lotoirtors serving; also hoddles. moans adapted to otfct'tthe aotuation of a stopping infltriunontality hy or through a deter-torupon failuro or unduo .lltlviillt of it's \\'arp-t liro:|d. and adov'u'o operative at -will to provcnt actuation of tho. stoppingiastrumontality upon oot-urronoe ot surh warp t'ault" whilo thesliotlt'(i1'iiiiiig moohanism continuos to oporato.

ii. In a loom. a shippor, a knock-oft memhor lhorofor. awax-patopanotioz mochanisni, an operating oonnecttiou,

invluding a ooupling'. hotn'oon Siliti inoohanism and tholilltu'ibtil'l' Illtllll tl' and a manually oporalod roupling'ooutrollor at tho front: of tho loom. to roudor the oouplin':inoporatiro and thorohy at tho \\'ill ot tho oporator ronrlor thoStopinution moi-hanism inoIlot-tiro \rith rospoot to tho ahippor.

H. In a loom. a ahippor, a kuook-ofl' dovioo thorotor, awarp-stop-moiion nwrhanism. and moans. inoludiu; a tfollllling :ulapt'odto ho roloasod at will. to oporato tilt knot-l0 oll' (Iorioo hy orthrough tho stoppiotion moolmuism. roloaso olthe coupling romoviu; tholcnot'k-otidorioo from oontrol of tho atop-motion lllt 'ilzllliSlllwhilo tho lattor (-ontinuos in oporationi 15. In a loom, narpstopanotihn moohanism normally adaptod to etToot. stoppago 0t tho loomupon tho ot-ourronoo ot a warp fault and moans to at will hold inahoyaur-o tho. stopping t'uno'riou only of said illl('i\2llli. lli.

iti. In a loom. a shippor. a knock-oh monihor thorofor. a rork-xhat't 9.a. uarp'stop-motion. inoluding a link. and an arm 1' ronnootod with tholink to rook said shall. (tllllililltti ith a manually r'ontrollodoonpliu H to (outlook said xhai'tv and arm.

17. In a loom. a \Valp-Stop-nlntion. int'luilin: a link 5, an arm 7ronnootod thorowith and adaptod to ho rookod upon tho t)l(llll'-"lltt5ot' a \rarp t'ault. a Hililllltl'. roloasinq moans thorot'or. inrluding'a rook-shaft Jr a r|p|plin; S to t'ulllu'r'tl it with tho arm toottot-t, rookin: of tho shaft. and roloaso. of the shipper. and amanually oporatod handlo to throw tho coupling out of oporat ion.

19 In :1 loom a shippor. a \varpstop'motion adaptod to ot'l'oot roloasoof tho shippor hy or through a slack \rarpthroad. and moans oporativo atwill to rondor tho stop motion inotlnutire with rosport to tho shippor,\rhorohy tho loom oan he -run notwithstanding tho Siilt'k throad to\roam the lattor up lit. In a loom. shippor, an iustrumontality todotoot tailuro or lliltillt. Siil(i ilt!\\ ot a \\':u'pthroa l. moansintorinodiato said instrumontality and tho shippor. to normallyWILLIAM 1. ANDREW \\'itnos.\'

W. (Y. Crimnutsox,

II. Gunny Ciumsox.

